Control mechanism for low-quad molds.



J. S. BANOROPT 8: M. G. INDAHL. CONTROL MECHANISM FOR LOW QUAD MOLDS.

APPLICATION FILED JULY 8, 1909.

Patented June 28, 1910.

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mvemfozs J. S. BANGR'OPT & M. G. INDAHL. CONTROL MECHANISM FOR LOW QUADMOLDS. APPLICATION IILBD JULY 8, 1909. I 962,412, Patented June 28,1910.

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Patented June 28, 1910.

J. S.'BANOROFT & M. G. INDAHL. CONTROL MECHANISM FOR LOW QUAD MOLDS.

APPLICATION FILED JULY 8, 1909.

Patented June 28, 1910.

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Patented June 28, 1910 gwueniio'zs S. MC M ANDREW BY GRAHAM c0,PHOYO-LETHOGRAPHERS. vmswmcnm, c. c

J. S. BANGROFT & M. O. INDAHL. CONTROL MECHANISM FOR LOW QUAD MOLDS.

APPLIOATION FILED JULY Patented June 28, 1910.

7 SHEETS-SHEET 6 J. S. BANGROFT & M. G. INDAHL.

CONTROL MEGHANISM FOR LOW QUAD MOLDS.

APPLICATION FILED JULY 8, 1909.

Patented June 28, 1910.

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M co. FHOTU-LITHOGRAFHERS WASHINGTON. D c.

can srar area JOI-IN SELLERS BANCROFT AND MAURITZ C. INDAHL, OFPHILADELPHIA, PENNSYL- VANIA, ASSIGNORS TO LANSTON MONOTYPE REACHINECOMPANY, OF PHILADEL- PI-IIA, PENNSYLVANIA, A CORPORATION OF VIRGINIA.

CONTROL MECHANISM: FOR LOIV-QUAD MOLDS.

To all whom it may concern:

Be it known that we, JOHN SELLERS BAN- onorr and MAURrrz O. INDAHL,citizens of the United States, residing at Philadelphia, county ofPhiladelphia, and State of Pennsylvania, have invented certain new anduseful Improvements in Control Mechanism for Low-Quad Molds; and we dohereby declare the following to be a full, clear, and exact descriptionof the same, reference being had to the accompanying drawings, forming apart of this specification, and to the figures of reference markedthereon.

The present invention relates to and constitutes an improvement upon themold operating mechanism of Patent No. 828,450, dated August 14, 1906,and has for its object to prevent rupture and deformation of thematrices and centering pin during the seating of the former upon themold and, incidentally, to improve the construction of the transmittingdevices.

The mechanism of the aforesaid patent is so organized that the cut-offactuating de vices exert pressure upon the centering pin concurrentlywith the compression spring thereby materially increasing the load onthe centering pin over and above the amount required to retain thematrix firmly upon its seat. This is due to the fact that when the uppermember of the floating tongs is tilted, to actuate the cut-off sectionof the mold, a part of the pressure upon its fulcrum is transmittedthrough the lower member to the centering pin, thereby supplementing theaction of the compression spring which has already been put underincreased tension by reason of the fact that it has been arrested by thequad matrix at an earlier point in its movement than when engaging acharacter or full body type matrix. The effect of thus overloading thecentering pin is to cause it to enlarge its seat on the matrix andotherwise distort or deform the latter or the point of the centeringpin.

According to the present invention, means, other than the centering pin,are provided for sustaining the pressure upon the fulcrum of the cut-offactuating member of the floating tongs, to relieve the centering pinfrom excess pressure, and, in addition, minor im- Specification ofLetters Patent.

Application filed J'u1y 8, 1909.

Patented June 28, 191%.

Serial No. 506,550.

provements are incorporated in the actuating devices for the cut-off,all as hereinafter will more fully and at large appear from theaccompanying description and claims.

In the accompanying drawings illustrating a preferred form of embodimentof the said invention-Figure 1 is a perspective view of a portion of thetype casting machine, including the control mechanism for the cut-0Esection of the mold blade. Fig. 2 is a front elevation of the controlattachment. Fig. 3 is a horizontal section. Fig. 4 1s a perspective viewof one form of low quad mold to which the improvements are applicable.Fig. 5 is a perspective view of the shiftable abutment. Fig. 6 is aperspective view of the movable interponent. Fig. 7 is a verticalsectional view of the attachment with centering pin and die case supportin their extreme elevated or retracted position. Fig. 8 is a similarview but with the centering pin and die case in their extreme forwardposition, the former engaging a character matrix. Fig. 9 is a similarview illustrating the effect of the engagement of the centering pin witha quad matrix during the advance of the die case and before the latterreaches its seat on the mold. Fig. 10 is a similar view showing therelation of the parts when the die case reaches its seat on the mold.

Similar numerals designate like parts in the several figures.

The machine illustrated contains a number of elements exhibited in theprior patent including the following; the two-way movable die case 1,with its carrier 2, support ing frame 3, crosshead 1, and lever 5; thecentering pin or driven member 6, with compression spring 7 interposedbetween collars 8, the one engaging a shoulder on the centering pin andthe other a head or driving member 9 movable on said pin; the mainactuating lever 10 engaging head 9 and coupled with die case lever 5through link 11; the floating tongs composed of pivotally connectedupper and lower members 12 13 with the inner end of the upper member 12coupled with the collar 8 located between compression spring 7 and head9, and the corresponding end of lower member 13 coupled with the collar8 located between the compression spring and centering pin 6;transmitting lever 15; bridge or frame 16 supporting: the die case andcentering pin mechanism; detachable frame 16 for the mold actuatingdevices; and low quad mold 17 provided with a sectional or divided moldblade whereof the main section 18 is connected by crosspin 19 with themold dimensioning devices.

The mold shown, while generically the same as that of the prior patent,contains improvements forming the subject of a separate application,Serial No. 499,950 filed June 3, 1909, and its substitution in this caseis merely for the purpose of illustrating that the control mechanism isapplicable to difl'erent styles and types of low quad molds. Thus, inthe prior patent, transmitting lever 15 was connected with the cut-offsection 20 through an intermediate lever acting upon the latch whichserved to couple the two sections together with their casting faces inalinement, whereas, in the present instance, said lever 15 is arrangedto swing in a path intersecting the power end of and thus directlyengage the floating lever 21 coupled with the cut-off section 20, forprojecting the latter into the mold cavity, beyond the main section,against the pressure of a retracting spring 22.

The improvements relate particularly to the floating tongs and the meansfor communicating motion therefrom to the transmitting member 15, and,as a preliminary to a description of the same, it should be noted thatthe movement of cut-off section 20, to close the mold, is indicated andproduced by the presentation to the centering pin of a quad matrixhaving a relatively shallow or no centering cavity, whereby the motionof the centering pin is arrested at an earlier period than when a highquad or character matrix is interposed, in consequence of which theinner ends of members 12, 13 of the float ing tongs are caused toapproach and the outer ends to separate, and, further, that the movementcommunicated by actuating lever 10 to the centering pin, althoughperformed in the same time, differs in extent from that communicated tothe die case, to the end that the centering pin when elevated may clearthe die case, and when depressed may overtake and engage the matrixpreliminary to the seating of the latter upon the mold.

The outer end of each member 12, 1.3 of the floating tongs is pivotallyconnected to one of two frames 25, 26. In the example illustrated, theframe 26 to which member 13 is pivoted is formed or provided withvertical extensions 27 pivotally connected to the arms of a yoke 28, thelatter pivoted to frame 16 and constituting the guiding member for saidframe; while frame 25 comprises a crosshead suitably guided, as upontransmissionmember 29, and provided with dependent arms 30 for receivingmember 12.

Transmission member 29, supported for longitudinal movement in a bearing31 on frame 16*, is provided with an adjustable head or nut 32 abovesaid bearing, with one or more, preferably two, offsets or shoulders 33below the erosshead of frame 25, and with means for sustaining it ineither of two positions against rotation in its bearing, said last namedmeans being represented by a locking pin 34 adapted to engage either oftwo longitudinal ways 35 on member 29, whereby the angular posit-ion ofshoulders 33 may be varied and controlled. The transmitting lever 15 iscoupled with said transmission member 29 through the medium of a rod 36and a spring box or compression member 37. In the preferred form shown,this rod 36 is passed through member 29 and provided with adjustingmeans, such as nuts 37 for engaging the upper end of said member, whilethe spring box or compression member is in the form of a casingpivotally connected with transmitting lever 15 and containing a spring38 interposed between the end of said casing remote from lever 15 and ahead 39 on rod 36.

It is obvious that the mechanism thus far described, while affordingsupport for the outer ends of the floating tongs member is incompetentto transmit motion from said tongs to the transmitting lever 15,inasmuch as no working connection is established be tween said lever andthe upper member 12 coupled with the driving member of the centering pinmechanism. Such a connection may, however, be supplied by, a movabletransmitting member interposed between tongs member 12 and a member ofthe transmitting devices, such as the tubular member 29 coupled with rod36. In the present instance, this transmitting member is applied in theform of an interponent 40 (Fig. 6) pivotally connected to frame 25 andprovided with a shoulder or shoulders 41 in position to enter beneathand engage the shoulder or shoulders 33 of the tubular member 29.

Pivotally connected with frame 26 to one side of the latters point ofattachment to.-

tongs member 13 and passing through a bearing 42 on interponent 40 toone side of the pivot of the latter is a rod 43 provided with a shoulder44 beneath bearing 42 and carrying a spring 45 interposed between saidbearing and adjusting nuts 46 on the outer end of said rod. The partsare so proportioned, arranged and adjusted that when the centering pinis fully retracted, as in Fig.

7, interponent 40 will stand with its shoul- H ders 41 to one side ofand out of register with the shoulders 33 on transmittingmember 29,being so held by spring 45 pressing the interponent into contact withshoulder 44, the latter forming a stop for limiting the movement of theinterponent in one direction.

So long as the members of the floating tongs move together the positionof the in terponent will remain unchanged, but immediately the outerends of the tongs members begin to separate (see Fig. 9) as when thecentering pin is arrested before actuating lever 10 completes itsmovement, the elevation of the pivot of interponent 40 relatively toshoulder 44 will cause the interponent to tilt until arrested by ashoulder 47 on frame 25, thus bringing its engaging shoulders 41 intoregistry with shoulders 33, whereupon the further movement of member 12will be transmitted through member 29, rod 36 and compression member 37,to transmitting lever 15. But here, as in the prior device, the downwardpressure exerted by the fulcrum of tongs member 12 on tongs member 13would be transmitted to the centering pin. To remedy this an adjustablebearing 48 is located on frame 16 opposite the fulcrum of member 12 inposition to be engaged by the floating tongs during the descent of thecentering pin. Conveniently, contact is made with bearing 48 through anextension of the link 50 connecting members 12 and 13, said linkcomprising two crossheads 51 each pivotally attached to one of themembers 12, 13 and a connecting screw 52, the threaded portion whereofengages member 13 and projects beyond the latter in position to engagebearing 48 at or near the limit of the downward movement of member 13.

Bearing 48 is adjusted to engage the float ing tongs immediately afterthe centerlng pin has overtaken and engaged a low quad matrix whenpresented thereto, (Fig. 9) this being the critical point fordetermining Whether or not motion shall be given to lever 15. It is tobe borne in mind that the low quad matrix is provided with a shallowcentering cavity, or none at all, hence, is engaged by the centering pinat an earlier stage in its movement toward the mold than is the highquad or character matrix with its relatively deep centering cavity.

Briefly stated, the operation of the mechanism is as follows: Then a lowquad matrix is presented, that is, a matrix with a relatively shallowcentering cavity or none at all, it is overtaken and engaged by thecentering pin before the die case has reached the limit of its mot-ionand is still advancing toward the mold, in consequence whereof pressureis exerted upon upper member 12 of the tongs to tilt the latter, and, bydisplacing the pivot of interponent 40 relatively to shoulder 44, toshift said interponent into register with transmitting member 29, asindicated in Fig. 9. Immediately thereafter the floating tongs engagebearing 48 and said tongs cease to float, each member 12, 13 thereafteroperating independently as a lever fulcrumed upon the connecting link.The two members now move in the same direction, but at different speeds(the upper member 12 moving the faster) until the lower member 13 isbrought to rest by the die case arriving at the limit of its motion.During this last named movement and before the matrix is seated underpressure upon the mold, the movement of member 12 on its now stationaryfulcrum elevates transmission member 29, places spring 37 undercompression and shifts the cut-off section of the mold (Fig. 10). If,however, the matrix presented to the centering pin represents a fullbody type, hence is provided with a shorter bearing or deeper cone holefor the reception of the centering pin, the latter will not engage itsbearing upon the matrix, so as to be retarded thereby until after thefloating tongs have engaged bearing 48, and the tilting of both members12, 13 incident to such engagement will carry the interponent 40 pastthe engaging shoulder on transmission member 29, as shown in Fig. 8, sothat when the differential motion is subsequently communicated tomembers 12, 13 it is no longer capable of moving the interponent toactive position, hence, no motion will be communicated thereby to thetransmission devices for lever 15. Then, for any reason, it is desiredto prevent the floating tongs from acting upon the cut-off section, itis only necessary to withdraw locking pin 34 and rotate transmissionmember 29 in its bearing to withdraw its shoulders 33 from the path ofinterponent 40 where it may be retained by the reengagement of thelocking pin with one of the ways 35. This leaves the interponent free toreciprocate alongside member 29 without communicating motion to thelatter.

As hereinbefore intimated, the control mechanism described is adaptedfor use in connection with various forms of low quad molds. Certain ofsaid molds require that the initial position of the arms of lever 15 bevaried, as by advancing the engaging arms or member so that it willstand nearer the transmission member to be operated upon. This may beaccomplished either by the adjusting nuts 37 on rod 36, or more quicklyby the interposition of a gage block 55 between said nuts andtransmission member 29, said block being preferably pivotally supportedupon a plate 56 carried by member 29. The improved mechanism is alsoadapted, like its predecessor, to reinforce or augment the pressure uponthe centering pin when the casting machine is equipped to produce largertype. With this end in view latches 57 are provided for engaging theends of yoke 28, interponent 40 is provicled with shoulders 58 inposition to engage transmitting member 29, and a stop is applied toprevent the elevation of the member of the spring box, coupled withlever 15, as by the insertion of a removable pin 59 (Fig. 2) in hole inthe frame, said pin projecting into the path traversed by lever 15 andpreventing upward motion of the horizontal arm thereof to which thespring box is attached. The parts being in the normal positionillustrated in Fig. 7, if frame 26 is elevated until yoke 28 is engagedby latches 57, the pivot end of the tongs will be elevated and thusprevent engagement with bearing 48 and at the same time shoulders 58 ofinterponent 10 will contact or nearly so with the head of transmissionmember 29, the latter retaining its initial position. If, now, thecentering pin is advanced under the action of compres sion 7, thecontinued motion of head 9 after lower member 13 had been arrested bythe seating of the centering pin will tilt upper member 12 to compressspring 38, and in so doing will exert pressure upon lower member 13 inthe same direction as does the compression or seating spring 7. IV henthe attachment is used to control the cut-off section of a low quad moldpin 59 is withdrawn and may be held for subsequent use by being insertedin a hole conveniently located outside the path of lever 15.

Having thus described our invention, what we claim as new and desire tosecure by Letters Patent of the United States, is:-

1. In a control mechanism for low quad molds equipped with floatingtongs and transmission devices and in combination therewith aninterponent adapted to be entered between one of the tongs members and amember of the transmission devices.

2. In a control mechanism for low quad molds, the combination of thefollowing elements, to-wit; driving and driven members coupled through acompression spring; floating tongs the members whereof are pivotallysupported at one end and coupled at the other end with said driving anddriven members, respectively; a transmitting member; and an interponentadapted to be interposed between said transmitting member and that oneof the tongs members coupled wit-h the driving member.

3. In a control mechanism for low quad molds, the combination of thefollowing ele ments, to-wit; a centering mechanism including a die case,a movable support therefor, a centering pin, and actuating devicesadapted to reciprocate the die case support and centering pin atdifferent rates of speed and provided with a yielding connection betweenthe centering pin and its driving member; a mold provided wit-h acut-off section; floating tongs having one of its members coupled withthe centering pin and the other with the driving member; transmissiondevices intermediate the cut-off section of the mold and that one of thetongs members coupled with the centering pin driving member; and meansfor intercept-ing and supporting the floating tongs at an intermediatepoint in the stroke of the centering pin.

4:- A control mechanism for low quad molds including, in combination,the following elements, towit; a matrix centering mechanism providedwith a centering pin, a driving member therefor and an interposedyielding connection or compression spring; floating tongs the memberswhereof are coupled at one end to said driving member and centering pin,respectively, and at the opposite end to movable frames or supports;transmission devices intermediate the cut-off section of the mold andthe movable frame or support for that one of the tongs members coupledwith said driving member; and a bearing in the path traversed by thetongs for arresting the latter and sustaining the pressure on thefulcrums of its members.

5. In type composing machines provided with a low quad mold and matrixcentering mechanism, the latter including a centering pin, a drivingmember therefor and an interposed compression spring, and'in combinationtherewith, a control mechanism for the cut-off section of the moldincluding a pair of floating tongs the members whereof are connected atone end to said centering pin and driving member, respectively,transmission devices intermediate one member of the tongs and thecut-off section of the mold, and a relatively fixed bearing interposedin the path traversed by the tongs and substantially in line with thepivoted connection between the members comprising said tongs.

6. A type machine provided with a low quad mold and matrix, clampingdevices, the latter including a pin, a driving member therefor and aninterposed compression spring, and in combination therewith, controllingdevices for the cut-ofl section of the mold, including a pair offloating tongs, the members whereof are pivotally supported at one endand coupled at the opposite end to said driving member and pin,respectively; a bearing located in the path of the floating tongsopposite the pivotal connection between its members; transmissiondevices for the cut-off section of the mold; an interponent arranged forinterposition between one member of said tongs and said transmissiondevices; and means coupled with the other member of said tongs forautomatically act-uating said interponent.

7. In a control mechanism for low quad molds, the combination of thefollowing elements, to-wit; a pair of floating tongs the members whereofare pivotally connected at one end to separable supports or frames; aseparate actuating device for each member of the said tongs both movablein the same direction but to different extents; a transmission member;an interponent for coupling said transmission member and one of thetongs members; and actuating devices for said interponent responding toa movement of separation on the part of the tongs members.

8. In a control mechanism for low quad molds, the combination of thefollowing ele ments, to-wit; a pair of floating tongs the memberswhereof are pivotally connected to separate supports at one end and toseparate actuating devices at the opposite end of said tongs; atransmission member; and an interponent carried by the support of onetongs member in position to be engaged with the transmission member.

9. In a control mechanism for low quad molds, the combination of thefollowing elements, to-wit; a pair of floating tongs the members whereofare each connected at one end to one of a pair of separately movablesupports or frames, and at the other end to one of a pair of actuatingmembers; a transmission member; an interponent pivoted upon one of saidseparately movable supports or frames in position to engage saidtransmission member; means for advancing said interponent into the pathof said transmission member; and a stop coupled with the movable frameor support adjacent that carrying said interponent, said stop operatingto withhold the interponent from engagement with said transmittingmember and to permit such engagement when the stop is retracted.

10. A control mechanism for low quad molds provided with a pair offloating tongs the members whereof are each pivotally supported at oneend and coupled at the opposite end to one of two actuating devicesmovable in the same direction, but at different speeds, and transmissiondevices coupled with the pivotal end of one of the tongs members, and incombination therewith, a bearing or stop interposed in the path of thefloating tongs to arrest the latter and support its members during thefinal movement of the actuating devices.

11. In a type machine provided with a low quad mold, matrix clampingdevices, floating tongs the members whereof are separately coupled withsaid clamping devices, and transmission devices for the cut-off memberof the mold, and in combination therewith a bearing or support locatedin the path traversed by the floating tongs and engaged by the latter, apivoted interponent coupled and moving with one member of the tongs inposition to engage a member of the transmission devices, a springoperating to advance the interponent to engaging position, and a stopcoupled with the other member of the tongs and operating to retain theinterponent retracted until withdrawn by the separation of the tongsmembers.

12. A control mechanism for low quad molds provided with floating tongsand a transmission member for actuating the cutofl section and incombination therewith a bearing interposed in the path of said floatingtongs to arrest the latter; an interponent coupled and moving with onemember of the tongs and adapted to engage said transmission member; andmeans coupled and moving with the other member of the tongs for shiftingsaid interponent into engaging position.

13. A control mechanism for low qua-d molds including the followingelements, in combination, to-wit; a pair of floating tongs the memberswhereof are each pivotally supported at one end and coupled at theopposite end to separate actuating devices or members movable in thesame direction at different speeds; a transmission member for thecut-off section of the mold located in proximity to the pivotal end ofone of the tongs members; a bearing or stop for intercepting the tongs;an interponent carried by one of the tongs members in position to beinterposed between the latter and the adjacent transmission member;means for automatically moving said interponent into engaging positionthrough a separation of the tongs members; and means for eflecting aseparation of the tongs members at or prior to the engagement of thetongs with said bearing or stop.

14. A control mechanism for low quad molds equipped with floating tongsand transmission devices coupled with one member of said tongs and incombination therewith a bearing or stop interposed in the path of thetongs and engaging the latter to form a pivotal support therefor.

15. A control mechanism for low quad molds provided with floating tongsand a transmission member for actuating the cutoff section and incombination therewith a bearing interposed in the path of said floatingtongs to arrest the latter, an interponent coupled and moving with onemember of the tongs and adapted to engage said transmission member, andmeans coupled and moving with the other member of the tongs for shiftingsaid interponent into engaging position.

16. In a control mechanism for low quad molds, the combination of thefollowing elements, to-wit; a low quad mold provided with a cut-offsection; a matrix centering mechanism including a movable die caseequipped with aplurality of matrices, the rear or bearing surfaceswhereof differ in height or elevation; means for clamping a selected.engaged by the latter during the descent of the plunger; a transmissionmember for the cut-off section; an interponent coupled with the fulcrumend of one of the tongs members, and means coupled with the other tongsmember and operating upon the interponent to move the latter intoengagement with the transmission member.

17 In a control mechanism for low quad molds wherein the actuatingmember for the cut-01f section of the mold is coupled with the matrixseating mechanism through a pair of floating tongs, and in combinationtherewith the following elements, to-wit; a longitudinally movabletransmission member; an interponent coupled with one member of thefloating tongs and movable into and out of engagement with a shoulder onsaid transmission member.

18. In a control mechanism for low quad molds wherein the actuatingmember for the cut off section of the mold is coupled with the matrixseating mechanism through a pair of floating tongs and in combinationtherewith, an interponent coupled with one member of the tongs, and areciprocatory transmission member provided with an offset or shoulderfor engagement by said interponent, said transmission member beingmovable to alternately interpose and withdraw its shoulder from the pathof the interponent.

19. In a control mechanism for low quad molds wherein the actuatingmember for the cut-off section is coupled with the matrix seatingmechanism through floating tongs and in combination therewith means forarresting and sustaining the tongs and means for varying the relation ofthe tongs and said arresting means, to suspend the action of the latter.

20. In a control mechanism for low quad molds the combination of thefollowing ele ments, to-wit; a pair of floating tongs the memberswhereof are pivotally supported at one end and connected at the oppositeends to separate actuating members; and a bearing located in the path ofthe tongs to arrest and sustain the pivotal connection between itsmembers.

21. In a control mechanism for low quad molds, the combination of thefollowing elements, to-wit; a pair of floating tongs the members whereofare pivoted together and each pivotally supported at one end andconnected at the opposite end to separate actuating members; a stop orbearing located in the path of the tongs to arrest and support thepivotal connection between its members; and means for shifting thepivotal supports at the ends of the tongs members to change their pathof movement with relation to said ftop or bearing and prevent contactwith the atter.

JOHN SELLERS BANOROFT. MAURITZ C. INDAHL.

WVitnesses:

MORTIMER A. JONES, FRED VVEINDEL, Jr.

